13 Month Calendar 2026

The full 2026 view of the 13 month calendar — every month, Sol included

2026 on the 13 month calendar

In 2026, the 13 month calendar has its usual 13 equal months of 28 days each — 364 days — plus one Year Day at the end of December. 2026 is not a leap year, so there's no Leap Day. Every month starts on Sunday and ends on Saturday, exactly like every other year on the 13 month calendar.

January 1, 2026 falls on a Thursday on the Gregorian calendar — but on the 13 month calendar, January 1 is always Sunday. The full year follows the perpetual weekday pattern that makes the 13 month calendar so useful for planning.

The 13 months of 2026 — visual grid

Every month of the 13 month calendar 2026 is exactly 28 days, laid out Sunday through Saturday. Because the calendar is perpetual, every month looks identical: the 1st is always Sunday, the 7th is always Saturday, and so on. Each card below shows one of the 13 months alongside its Gregorian date range.

January

Jan 1 – Jan 28, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

February

Jan 29 – Feb 25, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

March

Feb 26 – Mar 25, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

April

Mar 26 – Apr 22, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

May

Apr 23 – May 20, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

June

May 21 – Jun 17, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

Sol (13th month)

Jun 18 – Jul 15, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

July

Jul 16 – Aug 12, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

August

Aug 13 – Sep 9, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

September

Sep 10 – Oct 7, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

October

Oct 8 – Nov 4, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

November

Nov 5 – Dec 2, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

December

Dec 3 – Dec 30, 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Year Day — December 31, 2026 (Gregorian). This single day belongs to no month and no weekday on the 13 month calendar. 2026 is not a leap year, so no Leap Day is inserted.

Key 2026 dates on the 13 month calendar

  • New Year (Jan 1, 2026 Gregorian): January 1 on the 13 month calendar — a Sunday, as always
  • Sol begins: June 18, 2026 (Gregorian) = Sol 1 — start of the new 13th month
  • Summer solstice (Jun 20–21, 2026): Sol 3–4 — near the middle of Sol, which is exactly where the 13 month calendar centers it
  • Sol ends: July 15, 2026 (Gregorian) = Sol 28
  • Year Day: December 31, 2026 — the only day in 2026 that doesn't belong to any month or weekday

Convert any 2026 date

Use the 13 month calendar date converter to translate any Gregorian 2026 date into its 13 month calendar equivalent. You can also find your 13 month calendar birthday for 2026 — including the perpetual weekday it falls on every year.

Plan 2026 with the 13 month calendar

Want to run your year on the 13 month calendar? Download the free 13 Month Planner PDF — a printable layout of all 13 months of 2026, Sol included, with the perpetual Sunday-to-Saturday week ready to fill in.

Learn more about the 13 month calendar